ML20070R446

Proposed Tech Spec 3.4.1.1 Re Outage Times for Turbine Bypass Valves

ML20070R446
Person / Time
Site:	Three Mile Island
Issue date:	03/25/1991
From:	GENERAL PUBLIC UTILITIES CORP.
To:
Shared Package
ML20070R431	List: ML20070R428 ML20070R435 ML20070R446
References
NUDOCS 9104010194
Download: ML20070R446 (1)

Text

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-3.4 DECAY HEAT REMOVAL CAPABILITY Applicability-Applies to the operating status of systems and components that function to remove decay heat when one or more fuel bundles are located in the reactor vessol.

Obiective-To define the, conditions necessary to assure continuous capability of decay heat removal.

Specification 3.4.1 Reactor Coolant System temperature greater than 250'F.

3.4.1.1 With the Reactor Coolant temperature greater than 250'F, three independent EFW pumps and associated flow paths shall be OPERABLE **

with:

a. Two EPW pumps, each capable of being powered from an O'PERABLE energency bus, and one EFW pump capable of being powered from an ODERABLE steam supply system.

(1) With one pump or flow path inoperable, restore the inoperable pump or flow path to OPERABLE statue within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in COLD SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

(2) With more than one EFW pump or flow path inoperable, restore the inoperable pumps or flow paths to OPERABLE statue or be subcritical within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, in at least HOT SHUTDOWN within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and in COLD SHUTDOWN within the following 6 houro,

b. Pour of the six turbine bypass valves OPERABLE. With more than two turbine bypass valves inoperable, restore operability of at least four turbine bypass valves within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />.

c. The condensate storage tanks (CSTs) OPERABLE with a minimum of

.150,000 gallons of condensate available in each CST.

(1) With a CST inoperable, restore the CST to operability within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in at lenot HOT SHUTDOWN within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and COLD SHUTDOWN within the next 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

(2) With more than one CST inoporable, restore the inoperable CST to OPERABLE status or be subcritical within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />,

, in at least HOT SHUTDOWN within the nsat 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />, and in-COLD SHUTDOWN within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />.

• These requirements supplement the requirements of Sections 3.1.1.1.c, 3.1.1.2, 3.3.1, and'3.8.3.

• • HSPS-operability is specified in Section 3.5.1.

3-25 Amendment No. 4, 78, 98, 119, 124 9104010194 910325 PDR ADOCK 05000289 P PDR

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